We have adopted a specialist team approach to our practices for many years. We feel that this is the way our clients want us to work and that specialisation leads to the provision of a better service. Our teams have a broad spread of expertise and experience, with the more junior members well supported by the more senior members.

Please use the links to the right for further information about the practice areas we specialise in.

William Tyzack

Year of call: 2007

William joined Guildhall as a door tenant in 2019. He continues to practise from Queen Elizabeth Building in London.

A large part of William’s practice involves complex financial claims on divorce, frequently involving trusts, companies and conflicts of law issues. Cases involving private international law and the application of EU regulations form a major part of his practice. He is often instructed in child abduction cases under the 1980 Hague Convention and in applications for relocation. William has advised solicitors on English law across many EU & worldwide jurisdictions and has provided written and oral evidence on English law in foreign courts. He has lectured on international law issues both in the UK and abroad. William has acted on behalf of trustees, beneficiaries and companies, and has advised and represented clients in applications under the Inheritance (Provision for Family and Dependants) Act 1975.

Alongside this, William practises in the Court of Protection in cases relating to both health and welfare and property and financial affairs. He has been instructed in complex financial cases involving breaches by donees and deputies of their fiduciary duties, challenges to the validity of lasting powers of attorney and decisions in relation to the use of P’s assets. In respect of health and welfare, William has been instructed in cases involving care issues, serious medical treatment and the removal of P from the jurisdiction. He has acted in cases involving vulnerable adults under the inherent jurisdiction, and has experience of cases involving wider areas of public law.

William is regularly instructed in cases involving complex jurisdiction, forum and international enforcement issues under domestic and EU law. He has represented private individuals and companies in cases in the English courts involving:

jurisdiction or forum conveniens issues;

worldwide freezing orders;

disclosure orders in support of foreign proceedings under the Civil Jurisdiction and Judgments Act 1982;

anti-suit injunctions;

applications for a stay of English proceedings due to the existence of related or connected foreign actions.

On a number of occasions William has been asked to provide expert evidence to foreign courts on English law or the English court’s approach to aspects of EU law.